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Let the number of males = number of females = n Hence, total age of males = 8n Let the average age of females = x Hence, total age of females = nx Total age of the staff = 8n + nx + x + 10 Since this is a single linear equation in two variables, a unique solution can’t be found. Therefore, the average age of females cannot be determined.
The average age of the husband, wife and their child 4 years ago was 24 years and that of the husband and the child 5 years ago was 19 years. The prese...
A train takes 10 seconds more to cross a 250-metre-long platform than it takes to cross a pole. If a car running at the speed of 40 m/s takes 55 seconds...
In a family a couple has a son and a daughter. The age of the father is four times that of his son and age of her daughter is half of her mother. The wi...
Amit age after 11 years will be 3 times his age 3 years back. What is the present age of Amit?
Arjun is three years senior to Binny, who is twice as old as Chinu. If the average age of Arjun, Binny, and Chinu is 21 years, what is the age differenc...
The present age of Preeti is twice Ruchi’s present age. Six years ago, their average age was 15 years. What will be the Preeti’s age after f...
If 3 years is subtracted from the present age of R and the remainder is divided by 9, then the present age of his grandson A is obtained. If A is 4 yea...